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Physics
Let np and ne be the number of holes and conduction electrons respectively in a semiconductor. Then
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Q. Let $n_p$ and $n_e$ be the number of holes and conduction electrons respectively in a semiconductor. Then
NEET
NEET 2022
A
$n_p>n_e$ in an intrinsic semiconductor
B
$n_p=n_e$ in an extrinsic semiconductor
C
$n_p=n_e$ in an intrinsic semiconductor
D
$n_e>n_p$ in an intrinsic semiconductor
Solution:
In intrinsic semiconductors, the creation or liberation of one free electron by the thermal energy creates one hole simultaneously. Thus, in intrinsic semiconductors $n_e=n_h$.